| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S04E01 | Tower of Babel |
April 24, 2017
Smithsonian Channel (CA)
|
44 | |
| S04E02 | Riddle of Petra |
May 1, 2017
Smithsonian Channel (CA)
|
44 | |
| S04E03 | Stonehenge: The Final Mystery |
May 8, 2017
Smithsonian Channel (CA)
|
44 | |
| S04E04 | The Headless Gladiators of York |
May 15, 2017
Smithsonian Channel (CA)
|
44 | |
| S04E05 | The Ten Plagues of Egypt |
May 22, 2017
Smithsonian Channel (CA)
|
44 | |
| S04E06 | Shrunken Heads |
May 29, 2017
Smithsonian Channel (CA)
|
44 | |
| S04E07 | Bog Bodies |
June 5, 2017
Smithsonian Channel (CA)
|
44 | |
| S04E08 |
Garden of Eden
season finale
|
June 12, 2017
Smithsonian Channel (CA)
|
44 |
No artwork of this type.
No artwork of this type.
